Gry/blk spks in clr mucus

When I try to clear my throat, greyish black specks in clear mucus is what I spit. It's not often tho it happens 3-5 times a day. I'm a non smoker and not an alcoholic. I've been to a pulmonary doc and he said my lungs are clear. I've also been diagnosed with hyper acidity and disc bulges in cervical and thoracic disc
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Doctor Answers (1) on Gry/blk spks in clr mucus

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Dr. Chetankumar D Jain Mumbai | Pulmonologist
Hi, Welcome to Practo, Your sputum black colour may because of pollution or work place exposure to some sooth. Neither acidity nor disc bulge can cause this.
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